Gas burner



L. KIRSCHMANN GAS BURNER Filed Au 14, 1922 JM-t Patented Nov. ll, 1%24.

LEOPOLD KIRSCHMANN, OF I-IALENSEE, GERMANY.

GAS BURNER.

Application filed. August 14, 1922. Serial No. 581,769.

To all whom it may concern:

Be it known that I, Lnoronn KmsoHMANN, a citizen of the German Republic,residing at Halensee, Germany, have invented cer tain new and usefulImprovements in Gas Burners (for which I have filed an application forpatent in Germany on the 23rd of April, 1922), of which the following isa specification.

This invention relates to a gas burner the construction of which isimproved in such a manner that without admission of air for combustion acomplete combustion of all gas particles with a non-luminous and anonsoot-producing blue flame is effected owing to the peculiarconfiguration of the burner head.

lVith the Bunsen burners which are actually used for gas ovens of anytype an air inlet is arranged at the burner end of they gas tube behindthe gas cook through which air flows into the tube to admix with the gasbefore the same flows out through the burner head. A pointed flame, orif the burner head has several borings, a crown of pointed flames isproduced. It is generally supposed that the addition of combustion airincreases the heating power of the flame and reduces the consumption ofgas. This is however not the case as I have found out by experiment.

This invention has for its object a gas burner which is not only veryeconomical in use but presents further the advantage that theback-burning of the flame in the tube, which at present frequentlyhappens as soon as the gas cock is partly shut off to decrease the gassupply, is absolutely avoided with all the inconveniencies resultingfrom it.

An embodiment of the invention is shown by way of example in theaccompanying drawing, wherein:

Fig. 1 shows the improved gas burner in longitudinal section.

Fig. 2 is a plan view of the same.

Fig. 3 shows the burner in side elevation on a smaller scale.

The gas tube 1 is open at the upper end but has no air inlet as usual.In this open end of the gas tube 1 the burner 52 is arranged which ispreferably made of soap stone (steatite) or other equivalent material.This burner 2 is preferably of pyramid shape, but it could be also ofcone shape or spherical-cylindrical shape. In the burner 2 a convenientnumber of very fine borings 3 of about 0.3 to 0.4 mm. diameter arearranged which stand at an angle to the axis of the burner. In the formof construction shown the borings are arranged in two circles concentricto the point of the burner so that between the orifices of every twoborings 3 of the inner circle and of the outer circle which are inalignment, an orifice of a boring of the outer circle is situated. Owingto this arrangement of the orifices of the borings a star-shaped flameis produced (Fig. 2) as the gas jets flowing out of the two orifices inalignment combine to form a long flame, the gas jets flowing out of theintermediate orifices of the outer circle producing only a short flame.

The flames which, as shown in Fig. 3, are upwardly directed at an angleare flattened by the surface to be heated which stands only at a shortdistance above the point of the burner as can be seen from Fig. 1. Thereis no danger that the flame can be thrown back into the gas tube orextinguish nor that the burner or the heated surface be blackened bysoot. The fine gas particles which burn with a blue flame, combine to aflame which burns calmly, comes in close contact with the surface to beheated and licks the same upon a much larger extent than is the casewith burners of known construction. As the gas pressure is not artifi-'cially increased by the addition of combustion air a considerable savingof gas is ensured.

The improved gas burner can burn with a quite small flame, the admissionof gas being almost entirely shut off, as no backburning of the flamehas to be feared and a further advantage is that by the quiet flamewithout pressure the objects heated do not burn so rapidly as is thecase at present.

Tests have proved that this gas burner saves much more gas than could beexpected.

I claim A gas burner for heating and cooking in which the gas isadmitted to the burner without previous addition of air comprising apyramidal burner tip with narrow bores radiating from the centre so thatin the at a greater angle than the bores of the inner outer surface ofthe burner tip tW0 concencircle. 10 trio circles of gas outlet openingsare formed, In testimony whereof I afiix my signature the gas outletopenings of the inner circle 1n presence Of tWO Witnesses.

being situated in the same vertical planes LEOPOLD KIRSCHMANN. as everysecond gas outlet opening "of the Witnesses: outer circle and the boresof the outer cir- FERD NUSCH,

cle being inclined to the axis of the burner W. WORTH.

